ArticleChemphyschem : a European journal of chemical physics and physical chemistry2025
Proposition of Hyper-Chemical Exchange Saturation Transfer Subtraction Spectroscopy to Detect Very Weak and Broad Signals Hidden Under Baseline and Widen Range of Materials Accessed by Hyperpolarized
Article in Chemphyschem : a European journal of chemical physics and physical chemistry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Proposition of Hyper-Chemical Exchange Saturation Transfer Subtraction Spectroscopy to Detect Very Weak and Broad Signals Hidden Under Baseline and Widen Range of Materials Accessed by HyperpolarizedChemphyschem : a European journal of chemical physics and physical chemistry · 2025Article
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3 authors.
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Abstract
A recirculating hyperpolarization system is used for the hyper-Chemical Exchange Saturation Transfer (CEST) experiment after a stopped-flow scheme and a subtraction mode are added. The resulting hyper-CEST subtraction spectroscopy (HCSS) is effective in providing evidence for weak or broad signals. The chemical shift of these broad and weak signals has been successfully determined thanks to a thorough examination of the saturation frequency dependency. An application to polyimide reveals a very broad signal at 206.5 ppm with a line width of 96 ppm (11 kHz). The tiny dimension of the void space in polyimide, where the embedded Xe atoms are in a severely constrained state in dynamics, is supported by this broadness combined with the low field chemical shift. The weak signal that is not easy to be made evident in the standard hyperpolarized
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